Improvement in balance slide-valves



, valve-chest and dome.

UNITED STATES PATENT OFFICE.

WILLIAM DIIIIION, OF WHEELING, WEST VIRGINIA.

IMPROVEMENT IN BALANCE SLIDE-VALVES.

Speciiication forming part of Letters Patent No. 104,715, dated June 28,1870.

" To all whom it 'may concern:

to lift it oil' the seat, and the rod Dis made Be it known that I,WILLIAM DILLN, of adjustable by the nuts H, to regulate the ac-Wheeling, in the county of Ohio and State of West Virginia, haveinvented a new and Improved Balanced Slide-Valve; and I do herebydeclare that the following is a full, clear7 and exact descriptionthereof, which will enable others skilled in the art to make and use thesaine, reference being had to the accompaliving drawings, forming partof this specitieation.

My invention relatesto improvements in the arran gement and suspensionof balanced slidevalves; and it consists in providing a guide rod madevertically adjustable for regulating the movement of the valve, allarranged as hereinafter" set forth. I A

Figure 1 is a sectional elevation through the Fig. 2 is another'sectional elevation taken in a plane perpendicular to that of Fig. 1.

Similar letters of reference indicate correspending parts. v

A is the slide-valve; B, the dome above the stam-chest; C, the flexiblediaphragm in the top of the dome. D is the adjustable end, and E' therods connecting the valve to the end D.

yThe area of the diaphragm is such that the pressure on it equals thepressure on the valve.

It is made exible and elastic to yield slightly to the weight of thevalve when the rods E are on either side of the vertical line, so as nottion of the diaphragm on the valve, so as to allow the valve to worksnugly on its seat without material friction.

The rod Dis arranged in transverse stayplates, so that its .movementmustalways be in a true vertical line, thus relieving the plate c from alllateral or other strain to which it would be subject were thevalve-suspending rod or rods/pivoted to a rod pivoted to and dependingaltogether on the springplate for support. This arrangement is simpleand economical and eiective in securing the better or more perfectaction of the valve.

I am aware that slide-valves suspended from rods made adjustable by ascrew-thread and nut and connected withcorrugated metal disks or othersprings have been heretofore invented, and to such I lay no claim.

Having thus described 1n yinvention, I claim as new and desire to secureby Letters Patent- The arrangement of the rods E E, verticallyadjustableguide-rod l1), and the transverse `and stay-plates, with the valve A,dome B,

and spring-disk C, all as shown and described,

`for the purpose specified.

WILLIAM DIIILON.

Witnesses WM. H. IRWIN, HANNIBAL FORBES.

